Nut-locking washer.



B. F. HILDEBRAND.

NUT LOCKING WASHER.

APPLICATION FILED IIIAYI1.I9I6.

1,227,265. y y Pateted May22,1917. A

Sme/whoa NUT-LOCKING WASHER.

Specification of Letters Patent.

Patented May 22, 1917.

Application mea May'lv, 191e. semina. 98,129.

To all lwhom t may concern.' j

Be it known that I,- BENJAMIN F. HILDE- nRAND, a citizen of the United States, residing at Agnew, in the county of Santa Clara and State of California, have invented certain new and useful Improvements in Nut-Locking Washers, of which the following is a specification.

This invention relates to improvements in nut locks employed for preventing retrograde movement of nuts upon bolts, and has for one of its objects to improve the construction and increase the efliciency and utility of devices of this character.

Another object of the invention is to provide a simply constructed device, eflicient in operation and which does not require any change in the bolt or the nut.

lVith these and other ob ects in view, the invention consists in certain novel features of construction, as hereinafter shown and described and then specifically pointed out in the claims. Y

The improved device may be applied to nuts and bolts of various sizes and to bolts and nuts employed for various purposes, but the improved device is more specifically adapted for use in connection with the clamp bolts of railway rail joints, and for the purpose of illustration is shown thus applied, and in the drawings illustrating the preferred embodiment of the invention- Figure 1 is a side elevation of a portion of a conventional railway rail joint including one of the clamp bolts with the improvement applied;

Fig. 2 is a transverse section on the line 2 2 of- Fig. 1;

Fig. 3 is an enlarged elevation of the improved nut lock member;

Fig. 4 is an edge view of the device as shown in Fig. 3;

Fig. 5 is an enlarged sectional detail on the line 5-5 of Fig. 3.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawingsby member 10 is split at one' side, as indicated -at 16, and initially ,twisted with theparts adjacentfto-thefsplit 16 separated, as illustratedin Fig. 4. The split 16 is formed obliquely to the plane of the plate or washer 10 with the parts -interlapping, as shown,

and the split is in the upper portion of the washer or abovethe central axis of the bolt aperture. One face of the washer 10 is provided with a Vplurality of. spurs indicated conventionally at 17, the spurs being preferably of hardened steel and pointed, as illustrated in Fig. 5, the. spurs being also arranged staggering, as shown in Fig. 3. The studs or spurs extend at an angle to the face of the washer and point in the same general.

direction. The plate or washer 10 is extended at one edge, as shown at 18. The improved device is furnished to the railway companies or others who are to use it in the forms shown in Figs. 3 and 4 with the split side twisted, and is disposed upon the bolt 12 before the nut Vis applied with the spurs 17 outwardlyV and the flat lower ter- Y the severe jars to which such nuts are vsubjected by the rolling stock.

The washer 10 may be of any required size and strength, but will' be sufficiently heavy to withstand the strains to which it will be subjected when in use.

Having thus described the invention, what is claimed as new is: l

1. A nut locking washer comprising a flat body portion having a bolt receiving opening and provided with a cleft extending from the outer edge of the body portion to said bolt receiving opening, the walls of the cleft being undercut and the body portion at each side ofv said cleft being bent in opposite directions, and a plurality of nut engaging pins extending laterally from one side of the body portion around the bolt receiving opening and in- Copiesifof this patent may bebtainedfor clined With respect to said side, all ofthe pins being inclined 'in the same direction and provided With'pointed terminals.

2. A nut locking Washer comprising a flat body portion provided With a bolt receiving opening and having one end thereof flat and its other end curved, said body portion being provided with a diagonal cleft eX-V tending` from the bolt receiving opening'to theV outer edge of the body portion at the curved end thereof, the Walls of the cleft being undercut and the body portion'at each side of the cleft `-being bent in opposite directions, Vand a plurality of nut engaging pins arranged in concentric rows around the bolt receiving opening on one side of the body portion and inclinedwith respect to said side, the pins of one roW being disposed in staggered relation with respect'to the pins offan adjacent row and all of said pinsv being` provided with conical terf ininals inclined in the saine direction.

In testimony whereof aHiX iny signature. Y

BENJAMIN r. HILDEBRAND. [1.. a] e ve cents each, by addressing the Commissioner of Patents Washington, D. C. 

